Copy over gating config from c9s and adjust for RHEL-10

Resolves: RHELMISC-3930

.fmf/version

@@ -0,0 +1 @@
+1

gating.yaml

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+--- !Policy
+product_versions:
+  - rhel-10
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plans/integration-tests.fmf

@@ -0,0 +1,8 @@
+summary: Run integration tests
+prepare:
+    how: install
+    package:
+    - osbuild-composer-tests
+execute:
+    script: ./tests/scripts/run_tests.sh ./tests/
+    duration: 24h

plans/unit-tests.fmf

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+summary: Run unit tests from source
+discover:
+    how: fmf
+    dist-git-source: true
+execute:
+    how: tmt

tests/scripts/run_tests.sh

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+#!/bin/bash
+set -euxo pipefail
+
+TOPDIR=$1
+
+# Print some information about the machine
+df -h
+free -h
+rpm -qa
+find /etc/yum.repos.d -type f -print -exec cat {} \;
+
+# Run only basic smoke tests.
+# Our test-suite is currently very thorough and it builds a lot of images.
+# On some runs, TFT was able to build one image for 25 minutes. Our test
+# suite builds more than 25 images which means that the full test-suite
+# can run for more than 10 hours. That's just too slow and since we are also
+# able to run downstream tests on our much faster upstream infrastructure.
+# I think that it's enough to do just smoke tests here.
+/usr/libexec/tests/osbuild-composer/base_tests.sh

tests/unit.fmf

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+summary: Run unit tests
+require:
+  - golang
+test: cd ../osbuild-composer-*/ && sudo dnf builddep -y osbuild-composer.spec && GOFLAGS="-mod=vendor -tags=exclude_graphdriver_btrfs" go test ./...
+duration: 1h